What this snippet does
Changes written to a declared volume path after the VOLUME instruction are discarded.
Expected output
cat: /data/seed.txt: No such file or directory
Why practise typing this
Typing volumes & storage code builds muscle memory for the symbols and indentation Docker uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
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